see. Of course, I don't believe
that he is, but that's mere doubt, not negative certainty.
However, if I'm wrong, if this man is truly He, we are worthy of
him, we will penetrate his disguise."

"A very pretty problem, gentlemen," the Tenant said, smacking his
lips over his brandy, "for all that it may be a deadly serious
one for us. There is, of course, nothing we can do tonight. But,
tomorrow, we have promised to help our visitors, whoever they may
be, in searching for this crypt in the city.

"Murray, you were to be in charge of the detail that was to
accompany them. Carry on as arranged, and say nothing of our
suspicions, but advise your men to keep a sharp watch on the
strangers, that they may learn all they can from them.

"Stamford, you and Verner and I will go along. We should, if we
have any wits at all, observe something."

VIII

"Listen to this infernal thing!" Altamont raged. "'Wielding a
gold-plated spade handled with oak from an original rafter of the
Congressional Library, at three-fifteen one afternoon last
week--' One afternoon last week!" He cursed luridly. "Why
couldn't that blasted magazine say what afternoon? I've gone over
a lot of twentieth century copies of that magazine and that
expression was a regular cliche with them."

Loudons looked over his shoulder at the photostated magazine
page.

"Well, we know it was between June thirteen and nineteen,
inclusive," he said. "And there's a picture of the university
president, complete with gold-plated spade, breaking ground. Call
it Wednesday, the sixteenth. Over there's the tip of the shadow
of the old Cathedral of Learning, about a hundred yards away.
There are so many inexactitudes, that one'll probably cancel out
the other."

"That's so, and it's also pretty futile getting angry at somebody
who's been dead two hundred years, but why couldn't they say
Wednesday, or Monday, or Saturday, or whatever?"

Monty checked back in the astronomical handbook, and the
photostated pages of the old almanac, then looked over his
calculations. "All right, here is the angle of the shadow, and
the compass-bearing.

"I had a look, yesterday, when I was taking the local citizenry
on that junket. The old baseball diamond at Forbes Field is
plainly visible, and I located the ruins of the Cathedral of
Learning from that.

"Here's the above-sea-level altitude of the top of the tower.
After you've landed us, go up to this altitude--use the
baromet